As far as I know,
http://www.shop4dollsandbears.com/SearchResults.asp?Cat=280 is the only retailer in the USA, but they give free shipping for these dolls, so good deal (I bought mine on e-bay, wasnt really cheaper)
I also do Konji customs! The sweater and scarf shes wearing in the other pictures, I made. Ive also been changing her face more and more. Heres the latest thing Ive made for her:

I even made her new shoes (I could do better, I made them in about 15 minutes, since I had to leave)
rofl My next project: getting a couple more, and dressing them as Sumomo and Kotoko!
4laugh If you decide your interested in a custom, e-mail me on my web-site ( www.customcosplay.com )and tell me what you had in mind!